Gilbebt m



citeren n. cote, or rotsen ei'rr, ontironirin. i Letters Patent live. 623,218, dated llfmch Q6, ISST.

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T O ALL WHOM IT MAY CONCERN- .Be it known that I, GILBERT M. OGLE, of Folsoin City, in the Vcounty of Sacramento, and State of California, have invented a new and improved Mode of Operating Railroad Switches; and I do hereby declarethat the following is n. full, elettr, and erect description thereof, which will enable others skilled in'thc art to make and use the saine, reference being hnvd to the accompanyingdrawings, forming part of this speciiication, in which- Figure 1 is a side sectional view oi' niy invention teken inthe line n: er, tig. 2.

Figure 2, a plan or top view of the same. 4 y

Figure 3, n transverse verticulsection of the saine, taken in the line y y, iigs. 1 and 2.

Similar letters of reference indicate like parts.-

In iig. 2, the crank-shaft e lies midwaybetwecn und parnllelwith the line of the rail tracks, and has pinion wheels, a? ei, at each end, which are opera-ted by the sectors d or cZ, causing",r sn-id crank-shaft e to make e, half revolution, whereby the switch changes its' alignement to the other track. The sectors d and ci are caused to rock to the right or left on trunnions, as at when the levers a and a. or b and Zi are alternately depressed, euch pair of levers being linked or otherwise attached to the opposite :1i-nis of the sectors respectively. The levers Z7 and L, on the double track, nro adjusted close to the insides ofthe inside tracks, so that when a car or locomotive approaches on the track toiwliich the switch is not adjusted, the flange of the wheel will run upon the lever I) or Zi/,laccording ns the train may be approaching on the right or left-hand track, which lever, being depressed by the weight ot' the locomotive, will cause sector d, iig. 2, to roel; towards the opposite track, giving :t hull` revolution to the crank-shaft e, and throwing the switch, by means ot' :t crunk, cij, and connecting-rod, dl, in the alignement of the track on which the ears are approaching, so that the cars cannot run ed the track.

.When lever l) is being depressed lever b is brought up in position to throw thc switch back :igninin ense the cnrs should como in on the other track, thus acting as an absolutely self-adjusting'safety-switch when the vcnrs approach from that direction. At the other end or" the switch leverse and a :ire arranged in e similarmanner to llevers e and b and are-operated in n similar manner, exceptv that seid levers a and a are locutedvnwny from the tracks and nearer together, and are to he operated at the pleasure of the engineer by means Aoi en extra loose wheel, 5*, hung on the middle of the forward axle of the locomotive truck in such manner that the engineer cen move it to the right or left on the axle, so that it'will be on a line withwhichever lever he pleases. It he wishes to take the left track he throws the said loose wheel so as to operate the right lever, and viceversa.

Whena train is approaching the vibrating switch, on either branch of the double track with `which it con nects, if the proper adjustment of the switch with the track upon which the train is approaching depends upon .any act to be performed by the switch-tender or'the engineer, the neglect to perform such act will inevitably -nnd operating substantially as described.

cause the train torunoii` the track. Butas the switohwill always be in connection with one truck or the other, a trein approaching in the opposite direction vwill not run 'off the track, even it' the switch be turned the wrong way, but will only take the wrong branch of the doubletreeh Hence it is more important that the switch sliould'be absolutely seltndjusting when the train isapproaching it on either branch of the'double track than when approaching in the opposite direction. But in o'rder to dispense with the services of n local switchtender it is necessnry, in connection with means to render the switehabsolutely self-adjusting when the trein is opproaching it on the double track, .to have some means provided by which, when the train is approaching in the opposite direction, the engineer can cause the switch to become self-adjusting, if not absolutely so. I am aware that it has been attempted heretofore to ineke a switch absolutely self-adjusting, as the train approaches it on thedouble truck, by means similar to those herein described for that purpose, andI am also aware that the device of a movable wheel on theaxle of the locomotivetrnck, to operate on levers to move the switch, when adjusted for that purpose by the engineer, is not new; but I ain not aware that any means for rendering the `switch absolutely self-adjusting es the trainapproaches the switch on either branch of the double track, in connection with the means by which the engineer can render the switch self-adjusting as the trein approaches in the opposite' direction, so as to obviate ell danger of the train running oi` the track, and at the sometime dispense with the services of a loca-l switch-tender, have ever before been devised; but what I cle-im as my invention, and desire to secure by Letters Iatent, is-l 1. The mechanism hereinidescribed, for renderingsrailroad switch absolutely self-adjustingas the train approaches it on either branch of the double track, in combination with the mechanism herein described by which the engineer can render the switch self-adjusting as the vtrain approaches in the opposite direction.

2. I claim the levers ,b b', thc piiiion a?, the sector d, shaft c, and crank c', in combination with the levers a a', pinion a, sector d', and the loose wheel b* en the shaft of the locomotive truck, all constructed, arranged,

GILBERT M, 'ooLn Witnesses:

EL in LovELL, M. T. -R'mml` 

